Github has a lot of interesting projects and resources and you can easily star them. However, it's hard to remember what you starred so I've updated my collection of links in order to better highlight and find tools

• Development Resources - Collection of Development Resources and Frameworks
• E-Learning - A collection of resources that help you to study programming and sw engineering by yourself and for free
• Infrastructure (cloud, k8s) - Tools for your Infrastructure incl. Cloud and Kubernetes
• Online tools and services - Useful online tools and services
• Security and Pen-Testing - Resources related to IT security and pen-testing
• Tools for Linux and Windows - Useful tools for Linux and Windows